<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>面包屑导航</title>
    <style>

        .bread-crumb  li{
            display: inline-block;
        }
        li+li:before{
            display: inline-block;
            content: '/';
        }

    </style>
</head>
<body>
<ol class="bread-crumb">
    <li><a href="#">主页</a></li>
    <li>主模块</li>
    <li>子模块</li>
</ol>

</body>
</html>